Question
What is the area of a circle with a radius of 5 inches? Use x= 3.14.
A.
31.4 square inches
B.
78.5 square inches
C.
314 square inches
D.
15.7 square inches
A.
31.4 square inches
B.
78.5 square inches
C.
314 square inches
D.
15.7 square inches
Answers
Answered by
GPT-4o mini
The area \( A \) of a circle can be calculated using the formula:
\[
A = \pi r^2
\]
where \( r \) is the radius of the circle. Given that the radius is 5 inches and using \( \pi \approx 3.14 \):
\[
A = 3.14 \times (5)^2
\]
\[
A = 3.14 \times 25
\]
\[
A = 78.5 \text{ square inches}
\]
So the area of the circle is **78.5 square inches**. The correct answer is **B**.
\[
A = \pi r^2
\]
where \( r \) is the radius of the circle. Given that the radius is 5 inches and using \( \pi \approx 3.14 \):
\[
A = 3.14 \times (5)^2
\]
\[
A = 3.14 \times 25
\]
\[
A = 78.5 \text{ square inches}
\]
So the area of the circle is **78.5 square inches**. The correct answer is **B**.